Which system of equations is represented in the graph?

D is
x=-2
2x+y=-3

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Can someone pls ! pls answer all. no explanation needed..

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?